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annotate 14/Cerium_IO/Cerium_IO_memo.txt @ 92:4db3a0797aa7

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measure WordCount time in namako
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Fri, 02 May 2014 00:00:45 +0900
parents 40ea07afb5b7
children 5fb2d057b5d9
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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1 2014/05/01 (Thu)
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2 [memo]
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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3 Linux のメモリキャッシュをクリアする
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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4 http://futuremix.org/2009/09/clear-linux-memory-cach
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5 % sysctl -w vm.drop_caches=3
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6
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7 vm.drop_caches=index
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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8 index : 内容
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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9 1 : ページキャッシュ解放
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10 2 : ダーティキャッシュ、inode 解放
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11 3 : 1 かつ 2
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12
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13 sysctl について
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14
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15 ページキャッシュとは??
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16 ダーティキャッシュとは??
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17
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18 Linux PC でのスペックの確認方法
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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19 http://www.asterisk-works.jp/wiki/index.php/Linux_PC%E3%81%A7%E3%81%AE%E3%82%B9%E3%83%9A%E3%83%83%E3%82%AF%E7%A2%BA%E8%AA%8D%E6%96%B9%E6%B3%95
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20
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21 OS の確認方法
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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22 cat /etc/redhat-release redhat 系
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23 cat /etc/debian_version Debian 系
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24 cat /etc/lsb-release Ubuntu
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25
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26 様々なハードウェア情報
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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27 cat /proc/cpuinfo
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28 cat /proc/meminfo
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29
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30 計測を Block num division size いろいろ試してみよう
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Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
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31 Solaris でも測ってみたいよね -> mmap がはやいらしい
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32
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33 read size を自動チューニングしたい
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34 どうにかできないかな??